Measurement of refractive index of single microparticles
| dc.creator | Knoener, Gregor | |
| dc.creator | Parkin, Simon | |
| dc.creator | Nieminen, Timo A. | |
| dc.creator | Heckenberg, Norman R. | |
| dc.creator | Rubinsztein-Dunlop, Halina | |
| dc.date | 2006-10-12 | |
| dc.date.accessioned | 2026-07-07T07:29:54Z | |
| dc.date.available | 2026-07-07T07:29:54Z | |
| dc.description | The refractive index of single microparticles is derived from precise measurement and rigorous modeling of the stiffness of a laser trap. We demonstrate the method for particles of four different materials with diameters from 1.6 to 5.2 microns and achieve an accuracy of better than 1%. The method greatly contributes as a new characterization technique because it works best under conditions (small particle size, polydispersion) where other methods, such as absorption spectroscopy, start to fail. Particles need not be transferred to a particular fluid, which prevents particle degradation or alteration common in index matching techniques. Our results also show that advanced modeling of laser traps accurately reproduces experimental reality. | |
| dc.description | 5 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/physics/0610087 | |
| dc.identifier | http://arxiv.org/abs/physics/0610087 | |
| dc.identifier | Physical Review Letters 97(15), 157402 (2006) | |
| dc.identifier | doi:10.1103/PhysRevLett.97.157402 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/118288 | |
| dc.subject | Optics | |
| dc.title | Measurement of refractive index of single microparticles | |
| dc.type | text |